It is a real question because I already bought professionally twenty more or less sophisticated memory cards and the difference between first purchased there over six years (no read-write speed reference) and the news is obvious, these widely held Qumox comparison with high-end products current 10 times more expensive and displaying astronomical but uncontrollable performance. I argue in reply that this product is very good because they can not qualify the excellent since I have not yet evaluated its reliability over time. Jjai understand that some were faulty but probably more expensive as others. (I had big problems with the small latch to upscale SD cards, for example). I honestly think they deserve to be tried.
